Np

Neptunium-233

Protons (Z)

93

Neutrons (N)

140

Mass number

233

Half-Life

36.2 m

Abundance

---

Mass

233.041 u

Mass Excess

37,950.0 keV

Spin

(5/2+)

Discovered

1950

Binding energy per nucleon

7,596 keV

Neutron separation energy

7,481 keV

Proton separation energy

3,948 keV

Decay Mode

Decay chain

Neptunium-233Z 93 · N 14036.2 m
β⁺~100%
α~100%
α100%
β⁻100%
α~100%
α~100%
α99.992%
β⁻97.91%
α100%
β⁻100%
α100%